mb/google,intel: Add ChromeOS GPIOs to onboard.h

Change-Id: Ia473596e3c9a75587cd1288c8816bfef66bef82e
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59000
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/mainboard/google/butterfly/chromeos.c

@@ -11,9 +11,8 @@
 #include <types.h>
 #include <vendorcode/google/chromeos/chromeos.h>
 #include "ec.h"
+#include "onboard.h"
 
-#define WP_GPIO		6
-#define DEVMODE_GPIO	54
 #define FORCE_RECOVERY_MODE	0
 
 void fill_lb_gpios(struct lb_gpios *gpios)